What color eggs do bluebell hens lay?

Bluebelle's are a hybrid chicken, and yes they lay eggs.

A creamy brown in colour and around 240 or so in their first year of lay.

Bluebelles are a large Maran hybrid, and as such reach POL (The point at which they start laying) often much later than other breeds. For example - if you had purchased a Warren a Bluebelle and a Light Sussex, your Warren is likely to start laying around 16 - 18 weeks, the Sussex around 18 - 20 weeks and your Bluebelle between 18 and 26 weeks. Weather, food quality, access to fresh water etc. also have a huge influence over your birds egg production.